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erik [133]
3 years ago
5

Choose the constant that could be multiplied by each equation to create a system of equivalent equations with opposite terms.

Mathematics
2 answers:
melamori03 [73]3 years ago
6 0

Answer:

The 3rd one

Step-by-step explanation:

liberstina [14]3 years ago
4 0

Answer:

I think it's the third one. Because it will make both equation's x a opposite value (one is positive and one is negative).

Step-by-step explanation:

Because 2x+3y=1*5= 10x+15y=5 and then 5x+2y=8*-2 = -10x+4y=-16 both equations will cancel the Xs out and then you can solve for Y.

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6 0
3 years ago
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Solve the system by graphing. Y=2x-9 y=-2x-1
sattari [20]

Answer:

(2,-5)

Step-by-step explanation:

See attachment

One can also solve this by calculation:

y=2x-9

y=-2x-1

-

Rearrange either equation to find x.  I'll use the first:

y=2x-9

2x = y+9

x = (y+9)/2

Now use this value of x in the second equation:

y =  -2x-1

y =-2((y+9)/2)-1

y = (-2y-18)/2)-1

y = -y -9 - 1

2y = -10

y = -5

Now use -5 for y in the rearranged equation:

y =  -2x-1

-5 =  -2x-1

-2x = -4

x = 2

Solution is (2,-5)

But the question wants a graph solution, which is also fun when you use DESMOS.

4 0
2 years ago
How do I do this? Explain how you got the answer
gizmo_the_mogwai [7]

Answer:

All i did was divide

Step-by-step explanation:

5 0
3 years ago
Given the sizes of the angles as<br> specified in the picture, how large is<br> angle 1?
Dvinal [7]
100 because opposite angles are equal. The angles in the triangle above add up to 80 so the last angle must equal 100. Since angle 1 is directly opposite to that angle, it also equals 100.
6 0
3 years ago
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Hello, this is what I’ve got so far, please help me somebody!
topjm [15]

Answer:

6 .... 1

3 ... 1/100

9.... 1/1000

7 0
3 years ago
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